JPS59108939A - Cloud detecting device - Google Patents
Cloud detecting deviceInfo
- Publication number
- JPS59108939A JPS59108939A JP57219080A JP21908082A JPS59108939A JP S59108939 A JPS59108939 A JP S59108939A JP 57219080 A JP57219080 A JP 57219080A JP 21908082 A JP21908082 A JP 21908082A JP S59108939 A JPS59108939 A JP S59108939A
- Authority
- JP
- Japan
- Prior art keywords
- light
- glass
- reflected
- infrared rays
- dew
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/54—Cleaning windscreens, windows or optical devices using gas, e.g. hot air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/155—Monitoring cleanness of window, lens, or other parts
- G01N2021/157—Monitoring by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/158—Eliminating condensation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は車両のガラス内面の結露による曇りを検出して
これを自動的に除去する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for detecting fogging caused by condensation on the inner surface of a vehicle glass and automatically removing the fogging.
従来、車両のガラスが温度の変化、あるいは湿度の上昇
により結露して曇ると、視界が悪化して運転に差し支え
るので、車両の乗員が必要に応じて手動で曇り除去装置
、例えばガラス内面に貼り合わされた熱線式ヒータ、デ
フロスタファンモータ等を操作して曇りを除去している
が、結露状態によってはこの操作の頻度が高くなり、運
転に集中できなくなって安全走行上問題となり、また操
作自体が極めて煩わしいものであると言う欠点があった
。Conventionally, when a vehicle's glass becomes foggy due to condensation due to changes in temperature or increased humidity, visibility deteriorates and driving becomes difficult. The fog is removed by operating the attached hot wire heater, defroster fan motor, etc., but depending on the state of dew condensation, this operation becomes more frequent, making it difficult to concentrate on driving and causing problems for safe driving, and the operation itself The disadvantage was that it was extremely troublesome.
本発明は、車両のガラス内面に赤外光を照射してその反
射光を受光し、反射光量の変化でガラス内面の結露状態
を自動的に検出できるようにすることによって、従来の
欠点を解消しようとづるものである。The present invention eliminates the drawbacks of the conventional glass by irradiating infrared light onto the inner surface of the vehicle glass and receiving the reflected light, and automatically detecting the state of condensation on the inner surface of the glass based on changes in the amount of reflected light. This is what I am trying to do.
以下、図面に基づいて一本発明の実施例について説明す
る。Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図乃至第３図は本発明の第１実施例を示すもので、
車両のフン１−ガラス１の枠には赤外光を発光づ”る投
光器２を取り付け、フロントガラス１のほぼ中央部３へ
赤外光４を照射し、反射させ、該反射光５を受光できる
位置のフロントガラス１の枠に受光器６を取り付ける。1 to 3 show a first embodiment of the present invention,
A floodlight 2 that emits infrared light is attached to the frame of the windshield 1 and the windshield 1 of the vehicle, and the infrared light 4 is irradiated to approximately the center part 3 of the windshield 1, reflected, and the reflected light 5 is received. The light receiver 6 is attached to the frame of the windshield 1 at a position where it is possible.
第３図に示すように前記投光器２は例えば赤外発光ダイ
オードと、凸レンズで構成されて駆動回路７へ接続され
、該駆動回路７によって一定周期で断続的に点滅させ、
外部からの赤外光と区別するために特定の振幅変調を掛
けるものとし、また受光器６は例えばフォトダイオード
と凸レンズで構成され、フォトダイオードの出力信号は
増幅器８及び検波回路９を介して比較制御回路１ｏへ接
続され、該比較制御回路１０によって曇り除去装置のモ
ータ１１が駆動されるようになされている。As shown in FIG. 3, the projector 2 is composed of, for example, an infrared light emitting diode and a convex lens, and is connected to a drive circuit 7, and is caused to blink intermittently at a constant period by the drive circuit 7.
A specific amplitude modulation is applied to distinguish it from external infrared light, and the photoreceiver 6 is composed of, for example, a photodiode and a convex lens, and the output signal of the photodiode is compared via an amplifier 8 and a detection circuit 9. The comparison control circuit 10 is connected to a control circuit 1o, and the motor 11 of the defogging device is driven by the comparison control circuit 10.
ここで増幅器８、検波回路９及び比較制御回路１０は検
出回路１２の構成要素である。Here, the amplifier 8, the detection circuit 9, and the comparison control circuit 10 are components of the detection circuit 12.
従って、ガラス内面が結露していない時は、投光器２の
照射光４がフロントガラス丁の中央部３で反射して、該
反射光５を受光器６で受光し、該受光器６の出力信号は
増幅器８で増幅された後、検波回路９で振幅を検波し、
反射光の強さに応じた電圧として比較制御回路１ｏへ入
力し、予め設定された基準値と比較する。Therefore, when there is no condensation on the inner surface of the glass, the irradiated light 4 from the projector 2 is reflected at the center 3 of the windshield, the reflected light 5 is received by the receiver 6, and the output signal from the receiver 6 is is amplified by an amplifier 8, and then its amplitude is detected by a detection circuit 9,
The voltage is inputted to the comparison control circuit 1o as a voltage corresponding to the intensity of the reflected light, and compared with a preset reference value.
そして、ガラス内面が結露すると反射光５が散乱づ゛る
ので受光器６へ入射する光の強度が結露の状態に応じて
低下し、比較制御回路１ｏの基準値より低下すると曇り
検出信号が出力され、曇り除去装置のモータ１１を駆動
して、第２図に示すダツシュボードの空気吹出口１２か
ら風を吹出し１１フロントガラス１へ吹付けて結露を除
去する。そして、結露が除去されると再び反射光５が強
くなるので比較制御回路１０へ入力される電圧値が高く
なって、比較制御回路１０によりモータ１１を停止させ
る。When dew condenses on the inner surface of the glass, the reflected light 5 is scattered, so the intensity of the light incident on the light receiver 6 decreases depending on the state of condensation, and when it decreases below the reference value of the comparison control circuit 1o, a fogging detection signal is output. Then, the motor 11 of the defogging device is driven to blow air from the air outlet 12 of the dash board shown in FIG. 2 onto the windshield 1 to remove dew condensation. Then, when the dew condensation is removed, the reflected light 5 becomes stronger again, so the voltage value input to the comparison control circuit 10 becomes higher, and the comparison control circuit 10 stops the motor 11.
次に、第４図は本発明の第２実施例を示づもので、この
場合は投光器２をフロントガラス１の上部枠に取り付け
、また受光器６をダツシュボードの上に取り付けて、赤
外光をフロントガラス１のほぼ中央部３−で反射させる
ようにしたもので、その他の構成及び動作は前記第１実
施例と同様である。なお、投光器２と受光器６の取り付
は位置を逆にしても何ら問題はない。Next, FIG. 4 shows a second embodiment of the present invention. In this case, the projector 2 is attached to the upper frame of the windshield 1, and the receiver 6 is attached to the dash board to emit infrared light. is reflected at approximately the central portion 3- of the windshield 1, and the other configurations and operations are the same as those of the first embodiment. Note that there is no problem in attaching the light projector 2 and the light receiver 6 even if their positions are reversed.
尚、前記実施例では、曇り除去装置のモータ１１を駆動
させるものであるが、曇り検出信号によって熱線式ヒー
タあるいは空調機を作動させても良く、更に音声等によ
りフロントガラスの曇りを報知さけることもでき、また
フロントガラスに限らず車両の各部のガラスに設置する
こともできるものである。In the above embodiment, the motor 11 of the defogging device is driven, but the fogging detection signal may also be used to operate a hot wire heater or an air conditioner, and furthermore, the fogging of the windshield may be notified by voice or the like. Moreover, it can be installed not only on the windshield but also on the glass of various parts of the vehicle.
以上のように本発明は、赤外光を車両のガラス内面で反
射づるように照射する投光器と、ガラス内面による反射
光を受光して受光量に応じに電気信号を出力する受光器
と、該受光器の出力信号と予め定めた基準値とを比較し
曇り検出信号を出力づる検出回路とを備え、ガラス内面
の結露を検出づるようにした曇り検出装置であり、これ
によっＣガラスに結露が生じると自動的に曇り除去装置
を運転づることかできるので、車両の運転者がいらいら
手動操作する煩わしさから解放され、また曇りが生じる
と直ちに除去して視界を確保するのＣ安全運転に大きく
寄与する効果がある。As described above, the present invention includes a projector that emits infrared light so that it is reflected off the inner surface of the glass of a vehicle, a light receiver that receives the light reflected by the inner surface of the glass and outputs an electrical signal according to the amount of received light, and This fog detection device is equipped with a detection circuit that compares the output signal of the light receiver with a predetermined reference value and outputs a fog detection signal, and detects dew condensation on the inner surface of the glass. Since the fog removal device can be operated automatically when fog occurs, the driver of the vehicle is freed from the hassle of manual operation, and when fog occurs, it can be removed immediately to ensure visibility.C For safe driving. It has a significant contributing effect.
また、赤外光を振幅変調して用いているので運転者に何
らの影響も与えず、外部からの赤外光の入９射に対して
も影響を受けず、安定した曇り検出ができる効果がある
。In addition, since infrared light is amplitude-modulated and used, it does not have any effect on the driver, and is not affected by infrared light incident from the outside, making it possible to stably detect fogging. There is.
尚、上述した実施例はフロントガラス内面上の結露を検
出するものであるが、車両の後部ガラス内面上の結露を
検出するようにしても良い。Although the above embodiment detects dew condensation on the inner surface of the windshield, dew condensation on the inner surface of the rear glass of the vehicle may also be detected.
第１図乃至第３図は本発明の第１実施例を示すもので、
第１図は正面図、第２図は平面図、第３図はブロック図
であり、また第４図は第２実施例の正面図である。
１・・・フロントガラス ２・・・投光器４・・・
照射光 ５・・・反射光６・・・受光器
７・・・駆動回路８・・・増幅器
９・・・検波回路１１・・・比較制御回路
１２・・・検出回路代理人 弁理士 定立 勉
他１名1 to 3 show a first embodiment of the present invention,
1 is a front view, FIG. 2 is a plan view, FIG. 3 is a block diagram, and FIG. 4 is a front view of the second embodiment. 1... Windshield 2... Floodlight 4...
Irradiation light 5...Reflected light 6...Receiver
7... Drive circuit 8... Amplifier
9...Detection circuit 11...Comparison control circuit
12...Detection circuit agent Patent attorney Tsutomu Sadatsu and 1 other person
Claims (1)
光器と、ガラス内面による反射光を受光して受光量に応
じた電気信号を出力する受光器と、該受光器の出力信号
と予め定めた基準値とを比較し曇り検出信号を出力する
検出回路とを備え、ガラス内面の結露を検出するように
したことを特徴とする曇り検出装置。A light projector that emits infrared light so that it is reflected on the inner surface of the glass of the vehicle, a light receiver that receives the light reflected by the inner surface of the glass and outputs an electrical signal according to the amount of received light, and an output signal of the light receiver that is predetermined. What is claimed is: 1. A fogging detection device, comprising: a detection circuit that compares the temperature with a reference value and outputs a fogging detection signal, and detects dew condensation on the inner surface of a glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57219080A JPS59108939A (en) | 1982-12-13 | 1982-12-13 | Cloud detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57219080A JPS59108939A (en) | 1982-12-13 | 1982-12-13 | Cloud detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59108939A true JPS59108939A (en) | 1984-06-23 |
| JPH0336180B2 JPH0336180B2 (en) | 1991-05-30 |
Family
ID=16729943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57219080A Granted JPS59108939A (en) | 1982-12-13 | 1982-12-13 | Cloud detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59108939A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737629A (en) * | 1985-05-21 | 1988-04-12 | Nippondenso Co., Ltd. | Automatic windscreen defogger |
| FR2773614A1 (en) * | 1998-01-14 | 1999-07-16 | Intertechnique Sa | Device for detection of mist formation on a smooth surface such as a window |
| KR100396736B1 (en) * | 1999-12-09 | 2003-09-02 | 가부시키가이샤 고이토 세이사꾸쇼 | Evaluation device for a moisture in a vehicle lamp |
| JP2007093352A (en) * | 2005-09-28 | 2007-04-12 | Ohbayashi Corp | Fitting, determination method of condensation generation, and determination system of condensation generation |
| US7461551B2 (en) | 2005-03-17 | 2008-12-09 | Denso Corporation | Window fog detecting apparatus |
| WO2019069823A1 (en) * | 2017-10-03 | 2019-04-11 | 富士フイルム株式会社 | Imaging device, method for actuating imaging device, and imaging control program |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932685U (en) * | 1972-06-22 | 1974-03-22 | ||
| JPS56148954U (en) * | 1980-04-10 | 1981-11-09 |
-
1982
- 1982-12-13 JP JP57219080A patent/JPS59108939A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932685U (en) * | 1972-06-22 | 1974-03-22 | ||
| JPS56148954U (en) * | 1980-04-10 | 1981-11-09 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737629A (en) * | 1985-05-21 | 1988-04-12 | Nippondenso Co., Ltd. | Automatic windscreen defogger |
| FR2773614A1 (en) * | 1998-01-14 | 1999-07-16 | Intertechnique Sa | Device for detection of mist formation on a smooth surface such as a window |
| KR100396736B1 (en) * | 1999-12-09 | 2003-09-02 | 가부시키가이샤 고이토 세이사꾸쇼 | Evaluation device for a moisture in a vehicle lamp |
| US7461551B2 (en) | 2005-03-17 | 2008-12-09 | Denso Corporation | Window fog detecting apparatus |
| JP2007093352A (en) * | 2005-09-28 | 2007-04-12 | Ohbayashi Corp | Fitting, determination method of condensation generation, and determination system of condensation generation |
| JP4715428B2 (en) * | 2005-09-28 | 2011-07-06 | 株式会社大林組 | Condensation occurrence determination method and condensation occurrence determination system |
| WO2019069823A1 (en) * | 2017-10-03 | 2019-04-11 | 富士フイルム株式会社 | Imaging device, method for actuating imaging device, and imaging control program |
| EP3693726A4 (en) * | 2017-10-03 | 2020-09-09 | Fujifilm Corporation | Imaging device, method for actuating imaging device, and imaging control program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0336180B2 (en) | 1991-05-30 |
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